Grassholm

Country

Wales

Unitary Authority

Pembrokeshire

SPA status

Classified 31/01/1986

Latitude

51 43 51 N

Longitude

05 28 47 W

SPA EU code

UK9014041

Area (ha)

10.72

Component SSSI/ASSIs

UK9014041

Grassholm is a small island which lies about 18 km west of the
mainland coast of Pembrokeshire in south-west Wales. It is a rather
low, flat-topped basalt island with limited terrestrial vegetation
owing to the effects of large numbers of breeding seabirds,
together with the influence of salt spray and wind exposure.
Grassholm is of major importance as a breeding site for Gannet
Morus bassanus. The seabirds feed outside the SPA in
nearby waters, as well as more distantly elsewhere in the Irish
Sea.